How I can save a file into BLOB field?

Question

Hi,

I'm trying to do something like when you enable attachments, but I need to have more control over the attachment table , so I created the attachment table that contain the attachment files and more attributes and I want use  applyEdits to add and edit features. I'm wondering how I can insert a file chosen by the client into the BLOB field, please any idea would be great!!s

thanks

Dairis

DairisTapanes_Rios · Answer

Thank you so much !

AndyGup · Answer

Correct, there is no support for BLOBs, reference: ArcGIS REST API.

Feature object attributes are stored in JSON. Field values can be string, number or boolean.

-Andy

DairisTapanes_Rios · Answer

Hi Andy,

Thank you for you quickly answer.

Sorry if I don't explain me very well .

Yes, it is a JavaScript app but I don't want to enable attachments on the features classes because same document could be attachment to different features classes.

Then I come with the  idea to create a table that contain all the documents and create a relationship N:M to the different features classes that will have associated those attachments.

In that case I can't use addAttachment, updateAttachment and deleteAttachments.

That is why I'm wondering how to insert a BLOB field on ArcGIS Server Rest API, I read that  "the ArcGIS Server REST API does not support BLOBs", is it true ? if so,  what I can do ? Could you give better idea to handle that ?

Thanks,

Dairis